FREE Trial

A car travels one complete lap around a circular track at a constant speed of 120 km

Question:

A car travels one complete lap around a circular track at a constant speed of 120 km h−1.

a. If one lap takes 2.0 minutes, show that the length of the track is 4.0 km.
b. Explain why values for the average speed and average velocity are different.
c. Determine the magnitude of the displacement of the car in a time of 1.0 min.
(The circumference of a circle = 2πR, where R is the radius of the circle.)

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Answer rating: 75% (4 reviews)

Given constant speed is 120kmh a speeddistancetime distancespeedtimehere time is given in minutes ...View the full answer


answer-question-section
Related Book For  book-img-for-question
Cambridge International AS And A Level Physics Coursebook

Cambridge International AS And A Level Physics Coursebook

ISBN: 9781108859035

3rd Edition

Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside

See More Books
Question Posted:
See More Questions

Related Video

The area of a circle is given by the formula: A = ?r^2 Where A is the area, ? is a mathematical constant (approximately 3.14), and r is the radius of the circle. The radius is the distance from the center of the circle to the edge. So for example, if the radius of a circle is 5 units, the area would be: A = ?(5^2) = ?(25) = 78.5 square units Here three friends went out to a restaurant and decided to have pizza for lunch. While they were waiting for their order, one of them stepped out to take a call but promised to return in two minutes. The waiter came and presented them with the menu, and they decided to order two 10-inch pepperoni pizzas. The waiter took their order and left. Just then, the third friend returned and asked what they had ordered. They explained that they had ordered two small pepperoni pizzas as they were only three of them and it would be enough for them. However, the third friend suggested that for the same price, they could get a large pizza that would be much bigger than the two small ones. He asked the waiter for a pen and paper and proceeded to calculate the area of the two small pizzas and compared it to the area of one large pizza. The friends were amazed at how the circle measurements worked and decided to change their order from two small pizzas to one large pizza.

Students also viewed these Sciences questions

Building Microservices Designing Fine Grained Systems 2nd Edition - ISBN: 1492034029 - Free Book